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#include "sqlconversationmodel.h"

#include <QDateTime>
#include <QDebug>
#include <QSqlError>
#include <QSqlRecord>
#include <QSqlQuery>
#include <QCoreApplication>
#include <QDir>

static const char *conversationsTableName = "Conversations";

static void createTable()
{
    if (QSqlDatabase::database().tables().contains(conversationsTableName)) {
        // The table already exists; we don't need to do anything.
        QSqlQuery query;
        query.exec("DELETE FROM Conversations WHERE date('now', '-30 day') >= date(timestamp)");
        //        query.exec("DELETE FROM Conversations");
        return;
    }

    QSqlQuery query;
    if (!query.exec(
            "CREATE TABLE IF NOT EXISTS 'Conversations' ("
            "'id' INTEGER  NOT NULL PRIMARY KEY AUTOINCREMENT,"
            "'author' TEXT NOT NULL,"
            "'recipient' TEXT NOT NULL,"
            "'timestamp' TEXT NOT NULL,"
            "'message' TEXT NOT NULL,"
            "'type' TEXT NOT NULL,"//1:message/2:file
            "'answer' TEXT NOT NULL,"//0|100%:success/1|errorcode
            "FOREIGN KEY('author') REFERENCES Contacts ( name ),"
            "FOREIGN KEY('recipient') REFERENCES Contacts ( name )"
            ")")) {
        qFatal("Failed to query database: %s", qPrintable(query.lastError().text()));
    }
}

SqlConversationModel::SqlConversationModel(QObject *parent) :
    QSqlTableModel(parent),m_isGroup(false)
{
    createTable();
    setTable(conversationsTableName);
    setSort(3, Qt::DescendingOrder);
    // Ensures that the model is sorted correctly after submitting a new row.
    setEditStrategy(QSqlTableModel::OnManualSubmit);
}

QString SqlConversationModel::recipient() const
{
    return m_recipient;
}

void SqlConversationModel::setRecipient(const QString &recipient)
{
    if (recipient == m_recipient)
        return;

    m_recipient = recipient;

    QString filterString;
    if(recipient == "GROUP"){
        filterString = QString::fromLatin1("(recipient = '%1')").arg(m_recipient);
    }
    else{
        filterString = QString::fromLatin1(
                           "(recipient = '%1' AND author = '%2') OR (recipient = '%3' AND author='%4')").arg(m_recipient).arg(m_meMail).arg(m_meMail).arg(m_recipient);
    }

//    qDebug()<<filterString;
    setFilter(filterString);
    select();

    emit recipientChanged();
}

QString SqlConversationModel::me() const
{
    return m_meMail;
}

void SqlConversationModel::setMe(const QString &mail)
{
    if (mail == m_meMail)
        return;
    m_meMail = mail;
    emit meChanged();
}

bool SqlConversationModel::isGroup() const
{
    return m_isGroup;
}

void SqlConversationModel::setIsGroup(const bool &group)
{
    if(m_isGroup == group)
        return;

    m_isGroup = group;
    emit isGroupChanged();
}

QVariant SqlConversationModel::data(const QModelIndex &index, int role) const
{
    if (role < Qt::UserRole)
        return QSqlTableModel::data(index, role);

    const QSqlRecord sqlRecord = record(index.row());
    return sqlRecord.value(role - Qt::UserRole);
}

QHash<int, QByteArray> SqlConversationModel::roleNames() const
{
    QHash<int, QByteArray> names;
    names[Qt::UserRole] = "id";
    names[Qt::UserRole + 1] = "author";
    names[Qt::UserRole + 2] = "recipient";
    names[Qt::UserRole + 3] = "timestamp";
    names[Qt::UserRole + 4] = "message";
    names[Qt::UserRole + 5] = "type";
    names[Qt::UserRole + 6] = "answer";
    return names;
}

void SqlConversationModel::initCurrentUser(const QJsonObject &value)
{
    setMe(value["user_mail"].toString());
    setIsGroup(true);
    setRecipient("GROUP");
}

void SqlConversationModel::getNewMessage(QString from)
{
    if(m_recipient==from){
        submitAll();
    }
    else{
        qDebug()<<"skip submitAll:"<<from<<m_recipient;
    }
}
